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Climate and Average Weather Year Round at Thule Air Base Greenland

At Thule Air Base, the summers are very cold and partly cloudy and the winters are long, frigid, snowy, and mostly cloudy. Over the course of the year, the temperature typically varies from -19°F to 46°F and is rarely below -32°F or above 54°F.

Based on the tourism score, the best time of year to visit Thule Air Base for warm-weather activities is for the entire month of July.

Climate at Thule Air Base

frigidfreezingvery coldcoldvery coldfreezingfrigidJanFebMarAprMayJunJulAugSepOctNovDecNowNow54%54%27%27%overcastclearprecipitation: 1.8 inprecipitation: 1.8 in0.1 in0.1 inmuggy: 0%muggy: 0%drydrytourism score: 0.2tourism score: 0.20.00.0
Thule Air Base weather by month. Click on each chart for more information.

The warm season lasts for 3.2 months, from June 2 to September 8, with an average daily high temperature above 36°F. The hottest month of the year at Thule Air Base is July, with an average high of 46°F and low of 38°F.

The cold season lasts for 4.0 months, from December 5 to April 5, with an average daily high temperature below 3°F. The coldest month of the year at Thule Air Base is February, with an average low of -19°F and high of -7°F.

Average High and Low Temperature at Thule Air Base

Average High and Low Temperature at Thule Air BasewarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-40°F-40°F-20°F-20°F0°F0°F20°F20°F40°F40°F60°F60°F80°F80°F100°F100°FFeb 24-7°FFeb 24-7°FJul 1846°FJul 1846°F-19°F-19°F39°F39°FJun 236°FJun 236°FSep 836°FSep 836°FDec 53°FDec 53°FApr 53°FApr 53°F28°F28°F28°F28°F-9°F-9°F-10°F-10°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High -5°F-7°F-4°F10°F28°F40°F46°F42°F32°F19°F9°F0°F
Temp. -11°F-14°F-11°F3°F23°F36°F42°F39°F29°F14°F3°F-6°F
Low -17°F-19°F-16°F-3°F19°F33°F38°F35°F24°F9°F-3°F-12°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature at Thule Air Base

Average Hourly Temperature at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowfrigidfrigidfreezingvery coldfreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Kropotkin, Russia (3,108 miles away); Serebryanyy Bor, Russia (3,218 miles); and McMurdo Station, Antarctica (11,628 miles) are the far-away foreign places with temperatures most similar to Thule Air Base (view comparison).

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At Thule Air Base, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Thule Air Base begins around April 12 and lasts for 5.8 months, ending around October 6.

The clearest month of the year at Thule Air Base is June, during which on average the sky is clear, mostly clear, or partly cloudy 53% of the time.

The cloudier part of the year begins around October 6 and lasts for 6.2 months, ending around April 12.

The cloudiest month of the year at Thule Air Base is February, during which on average the sky is overcast or mostly cloudy 71% of the time.

Cloud Cover Categories at Thule Air Base

Cloud Cover Categories at Thule Air BaseclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 254%Jun 254%Feb 2527%Feb 2527%Apr 1240%Apr 1240%Oct 641%Oct 641%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 69%71%68%59%49%47%51%56%53%63%69%69%
Clearer 31%29%32%41%51%53%49%44%47%37%31%31%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Thule Air Base varies throughout the year.

The wetter season lasts 3.9 months, from June 22 to October 19, with a greater than 13% chance of a given day being a wet day. The month with the most wet days at Thule Air Base is August, with an average of 6.8 days with at least 0.04 inches of precipitation.

The drier season lasts 8.1 months, from October 19 to June 22. The month with the fewest wet days at Thule Air Base is March, with an average of 0.5 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation at Thule Air Base changes throughout the year.

Snow alone is the most common for 8.0 months, from September 21 to May 22. The month with the most days of snow alone at Thule Air Base is October, with an average of 2.9 days.

Rain alone is the most common for 4.0 months, from May 22 to September 21. The month with the most days of rain alone at Thule Air Base is August, with an average of 6.2 days.

Daily Chance of Precipitation at Thule Air Base

Daily Chance of Precipitation at Thule Air BasesnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 325%Aug 325%Mar 231%Mar 231%May 226%May 226%Sep 2114%Sep 2114%snowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 0.0d0.0d0.0d0.1d0.6d2.8d5.8d6.2d2.3d0.4d0.1d0.0d
Mixed 0.1d0.0d0.0d0.1d0.4d0.4d0.1d0.5d0.8d0.5d0.3d0.2d
Snow 0.6d0.5d0.5d0.9d0.8d0.3d0.0d0.1d1.4d2.9d1.8d0.9d
Any 0.6d0.5d0.5d1.0d1.8d3.5d6.0d6.8d4.5d3.8d2.1d1.2d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Thule Air Base experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 3.3 months, from June 7 to September 18, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain at Thule Air Base is August, with an average rainfall of 1.7 inches.

The rainless period of the year lasts for 8.7 months, from September 18 to June 7. The month with the least rain at Thule Air Base is February, with an average rainfall of 0.0 inches.

Average Monthly Rainfall at Thule Air Base

Average Monthly Rainfall at Thule Air BaserainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 inAug 11.8 inAug 11.8 inFeb 260.0 inFeb 260.0 inJun 70.5 inJun 70.5 inSep 180.5 inSep 180.5 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.0″0.0″0.0″0.0″0.1″0.7″1.5″1.7″0.6″0.1″0.0″0.0″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Thule Air Base experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 9.5 months, from August 20 to June 6, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Thule Air Base is October, with an average snowfall of 5.8 inches.

The snowless period of the year lasts for 2.5 months, from June 6 to August 20. The least snow falls around July 22, with an average total accumulation of 0.1 inches.

Average Monthly Snowfall at Thule Air Base

The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 0.9″0.9″0.7″1.3″1.3″0.7″0.1″0.7″3.4″5.8″3.0″1.7″

Due to its extreme latitude, Thule Air Base experiences polar day (also known as the midnight Sun) during the summer and polar night during the winter. These are periods of time in which the sun is continuously above or below the horizon for more than one day. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography.

In the summer at Thule Air Base during 2024, the Sun is continuously above the horizon for 3.9 months, rising at 2:19 AM on April 22, and not setting again until 1:29 AM on August 19.

In the winter at Thule Air Base during 2024, the Sun is continuously below the horizon for 3.4 months, setting at 1:58 PM on October 30, and not rising again until 12:02 PM on February 11.

Hours of Daylight and Twilight at Thule Air Base

Hours of Daylight and Twilight at Thule Air Basepolar daypolar nightJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 23 minMar 2012 hr, 23 minMar 2024 hr, 0 minJun 2024 hr, 0 minJun 2012 hr, 39 minSep 2212 hr, 39 minSep 220 minDec 210 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 0.0h3.5h11.7h19.9h24.0h24.0h24.0h22.2h13.9h6.5h0.0h0.0h

Daylight saving time (DST) is observed at Thule Air Base during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

Sunrise & Sunset with Twilight and Daylight Saving Time at Thule Air Base

Sunrise & Sunset with Twilight and Daylight Saving Time at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMApr 222:19 AMApr 222:19 AM1:29 AMAug 181:29 AMAug 181:58 PMOct 301:58 PMOct 30Feb 1112:02 PMFeb 1112:02 PMdaynightnightnightnightSolarMidnightSolarMidnightSolarNoonNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth at Thule Air Base

Solar Elevation and Azimuth at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM01010203001010202030-1037NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases at Thule Air Base

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level at Thule Air Base, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels at Thule Air Base

Humidity Comfort Levels at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 20%Jul 20%NowNowdrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Thule Air Base experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.3 months, from July 9 to November 18, with average wind speeds of more than 9.6 miles per hour. The windiest month of the year at Thule Air Base is August, with an average hourly wind speed of 10.4 miles per hour.

The calmer time of year lasts for 7.7 months, from November 18 to July 9. The calmest month of the year at Thule Air Base is April, with an average hourly wind speed of 8.7 miles per hour.

Average Wind Speed at Thule Air Base

Average Wind Speed at Thule Air BasewindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphAug 310.7 mphAug 310.7 mphApr 168.6 mphApr 168.6 mphNov 189.6 mphNov 189.6 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 9.39.39.28.78.99.310.010.410.110.29.79.4

The predominant average hourly wind direction at Thule Air Base is from the east throughout the year.

Wind Direction at Thule Air Base

Wind Direction at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNoweastnorthsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Thule Air Base is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 1.6 months, from July 15 to September 2, with an average temperature above 35°F. The month of the year at Thule Air Base with the warmest water is August, with an average temperature of 36°F.

The time of year with cooler water lasts for 7.4 months, from October 20 to June 1, with an average temperature below 31°F. The month of the year at Thule Air Base with the coolest water is March, with an average temperature of 30°F.

Average Water Temperature at Thule Air Base

Average Water Temperature at Thule Air BasewarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec28°F28°F30°F30°F32°F32°F34°F34°F36°F36°F38°F38°F40°F40°FAug 836°FAug 836°F30°FMar 2330°FMar 23Oct 2031°FOct 2031°FJun 131°FJun 131°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 30°F30°F30°F30°F30°F32°F35°F36°F33°F31°F30°F30°F

To characterize how pleasant the weather is at Thule Air Base throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Thule Air Base for general outdoor tourist activities is for the entire month of July, with a peak score in the second week of July.

Tourism Score at Thule Air Base

Tourism Score at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.20.20.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitation
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Beach/Pool Score at Thule Air Base

Beach/Pool Score at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.00.0NowNow cloudscloudsprecipitationprecipitation
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Thule Air Base typically lasts for 1.5 months (44 days), from around June 30 to around August 14, rarely starting before June 12, or ending after September 2.

Time Spent in Various Temperature Bands and the Growing Season at Thule Air Base

Time Spent in Various Temperature Bands and the Growing Season at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 3050%Jun 3050%Aug 1450%Aug 1450%Jun 1210%Jun 1210%Sep 210%Sep 210%0%Mar 160%Mar 16Jul 2179%Jul 2179%frigidfreezingvery coldcold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Growing Degree Days at Thule Air Base

Growing Degree Days at Thule Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F5°F5°F10°F10°F15°F15°F20°F20°F25°F25°FDec 3110°FDec 3110°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 2.2 months, from May 12 to July 20, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest month of the year at Thule Air Base is June, with an average of 6.9 kWh.

The darker period of the year lasts for 6.2 months, from September 17 to March 23, with an average daily incident shortwave energy per square meter below 1.4 kWh. The darkest month of the year at Thule Air Base is December, with an average of 0.0 kWh.

Average Daily Incident Shortwave Solar Energy at Thule Air Base

Average Daily Incident Shortwave Solar Energy at Thule Air BasebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 187.0 kWhJun 187.0 kWhNov 140.0 kWhNov 140.0 kWhMay 125.6 kWhMay 125.6 kWhJul 205.6 kWhJul 205.6 kWhSep 171.4 kWhSep 171.4 kWhMar 231.4 kWhMar 231.4 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 0.00.11.03.35.86.95.93.61.50.20.00.0

For the purposes of this report, the geographical coordinates of Thule Air Base are 76.531 deg latitude, -68.702 deg longitude, and 253 ft elevation.

The topography within 2 miles of Thule Air Base contains significant variations in elevation, with a maximum elevation change of 725 feet and an average elevation above sea level of 396 feet. Within 10 miles contains significant variations in elevation (2,657 feet). Within 50 miles contains large variations in elevation (4,446 feet).

The area within 2 miles of Thule Air Base is covered by sparse vegetation (99%), within 10 miles by sparse vegetation (50%) and water (36%), and within 50 miles by snow and glaciers (49%) and water (40%).

This report illustrates the typical weather at Thule Air Base, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Thule Air Base has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.